And then there were five. That's how many undefeated NFL teams remain going into Week 5. We know that many are perfect at 4-0, but here's the parity reality: 22 teams are also at or below .500.

The good news is, for those teams (and this game picker), there are still three quarters of the season to make amends. All times ET.

Matthew Stafford (AP Photo)

NFC Games of the Week

Detroit Lions at Green Bay Packers (Sunday 1 p.m., FOX) . The Lions are in first place in the NFC North for now, and if they win at Lambeau Field for the first time in almost 22 years, they should like their chances to stay there. When it happened in December 1991, they also went on to play in the NFC title game.

There's more recent history working against Detroit. The Packers are 6-1 after the bye under coach Mike McCarthy, and McCarthy is also 13-1 against the Lions. In the present, the Lions look a lot better with their passing game, pass rush and the linebacker/safety mismatches Reggie Bush creates. But it's still hard to see Matt Stafford outdueling Aaron Rodgers in Green Bay when it's never happened. When the Lions won in 2010 in Detroit, it was Drew Stanton over Matt Flynn in relief. Expect the Packers to announce their return in the division race. Prediction: Packers 37, Lions 24 | Video: Game preview | Week 5 picks | Sunday breakdown | The Linemakers' angle

New Orleans Saints at Chicago Bears (Sunday, 1 p.m., FOX) . The Saints are sizzling offensively again, and the short week/road game/grass factors can't be weighed too much here. The Bears' defense isn't as good as you think -- 23rd in passing, 26th in scoring and 30th in sacks (only 6). That sets up Drew Brees to pick them apart on intermediate routes.

In turn, it will put the heat on Jay Cutler to catch up against a Saints' defense that's super-improved at 13th in sacks, 5th in passing, 3rd in interceptions and 5th in scoring. Rob Ryan's creative 3-4 looks will give Cutler problems and bait him into mistakes. The Bears will need to lean more on Matt Forte, but it won't be quite enough. Saints 30, Bears 27 | Video preview | The Linemakers' angle

Game of Midweek

Cleveland Browns 37, Buffalo Bills 24. What was supposed to be a defensive struggle turned into a wild back-and-forth affair, despite the fact both starting quarterbacks, Brian Hoyer and EJ Manuel, were felled by knee injuries. While Buffalo finally got its running game rolling, Cleveland's big scoring plays on special teams and defense made the difference. (The pick was Browns 19, Bills 13)

Lock of the Week

Atlanta Falcons over New York Jets (Monday, 8:30 p.m., ESPN) . Just when we had faith that Rex Ryan and the Jets might have outsmarted us, there's the dumb notion they're already considering bailing on Geno Smith. You know what's worse than a Smith-Mark Sanchez controversy? A Smith-Matt Simms controversy. Meanwhile, the 1-3 Falcons are desperate for a prime-time home win after last week, and despite some tough losses for Matt Ryan, he's still the unquestioned man in the Georgia Dome. Falcons 31, Jets 13 | Video: Game preview | The Linemakers' angle

Upset of the Week

New England Patriots over Cincinnati Bengals (Sunday, 1 p.m., CBS) . So for the second consecutive week, the perfect Patriots are road underdogs. And for the second straight week, we like them to remain lead dogs. It's amazing how Tom Brady can make any mix of weapons work, while the Bengals, even with dazzling young skill talent, can still stagnate around Andy Dalton. Brady should have one of his top targets (Danny Amendola) back, and their defense will help them hold on late. Patriots 24, Bengals 23 | Video: Game preview | The Linemakers' angle

Rest of the Week

Baltimore Ravens at Miami Dolphins (Sunday, 1 p.m., CBS) . The Ravens should be angry birds as they need to iron out their pressing offensive issues, but the Dolphins are also mad mammals after their hard time in the Big Easy. This has the feel of an ugly, sack-laden fest, and because Baltimore needs to throw a lot more, there's a slight chance the more athletic Ryan Tannehill will be in a little less trouble than Joe Flacco. Dolphins 16, Ravens 15 | Video: Game preview | The Linemakers' angle

Kansas City Chiefs at Tennessee Titans (Sunday, 1 p.m., CBS) . The Chiefs do many little things right while also trying not to do too much. That's a signature of Andy Reid's best teams. They can keep up high-percentage offense (see Jamaal Charles) as their defense will to shut down a sputtering Titans ground game (see Chris Johnson). Ryan Fitzpatrick draws a tough first assignment as a starter, while Alex Smith stays on task. Chiefs 23, Titans 13 | Video: Munchak on Locker hit | Video: Game preview | The Linemakers' angle

Philadelphia Eagles at New York Giants (Sunday, 1 p.m., FOX) . It's old-school desperation from Tom Coughlin vs. new-school validity for Chip Kelly. Kelly is realizing that once Michael Vick lowers his gear, the whole uptempo approach breaks down. If the Giants can't take advantage of a division team that might have more problems overall, they are setting up for a major blowup of their foundation. For a change, their offense will get going early so Eli Manning isn't hung out to dry. Giants 27, Eagles 24 | Video: Eli deserves blame, Ross Tucker says | Video: Game preview | Playbook | The Linemakers' angle

Seattle Seahawks at Indianapolis Colts (Sunday, 1 p.m., CBS) . The marquee here is Russell Wilson returning to Big Ten country to face off with fellow tough, mobile, accurate second-year passer, Andrew Luck. But the undercard is an NFC team established as a physical force (Seahawks) and an AFC team working well to become one (Colts). The Seahawks just have the deeper pass rush to contain a young quarterback. Seahawks 20, Colts 17 | Video: Game preview | The Linemakers' angle

Carolina Panthers at Arizona Cardinals (Sunday, 4:05 p.m., FOX) . Cam Newton made his dazzling NFL debut against the Cardinals two years ago with 422 passing yards and 3 total TDs. He just had his best game of 2013, and the Panthers would have fixed more during the bye. His versatility will keep the Cardinals' defense off-balance, while Carolina's pass rush can tee off on poorly protected, non-mobile Carson Palmer. Panthers 27, Cardinals 20 | Video: Game preview | The Linemakers' angle

Houston Texans at San Francisco 49ers (Sunday, 8:30 p.m., NBC) . In the Sporting News predicted 2012 Super Bowl matchup that was only half right, the Texans don't have the same promise in '13. The 49ers showed that they still do by getting right in St. Louis, and have had a long time to gear up for more prime time. San Francisco will be unrelenting on Matt Schaub, while Houston's aggressive 3-4 defense will be driven batty by another nifty running quarterback, Colin Kaepernick. 49ers 30, Texans 20

San Diego Chargers at Oakland Raiders (Sunday, 11:35 p.m., NFL Network) . It's either Sunday Late Night Football or Monday Early Morning Football, and somehow, it's still billed as Thursday Night Football. Whatever time it's been, Philip Rivers has been money so far. The Raiders' pass rush isn't built to plunder him, and his connection with Antonio Gates has burned them many games before. Terrelle Pryor returns from a concussion sustained in Week 3. Chargers 28, Raiders 17 | Video: Philip Rivers flowing | Video: Game preview | The Linemakers' angle

Byes of the Week

Minnesota Vikings (1-3) Assuming Christian Ponder's ribs heal, the Vikings have a decision to make at quarterback during the layover. A temporary switch to Matt Cassel would signal moving on from Ponder for good, which would be a mistake.

Pittsburgh Steelers (0-4) shook things up by trading for tackle Levi Brown. That does nothing to improve their pass protection, with two more teams upcoming (Jets, Ravens) that can get after Ben Roethlisberger inside and out.

Tampa Bay Buccaneers (0-4) also gets a break from its winless misery, but unfortunately, it's just gotten messier with Josh Freeman and Greg Schiano. Hey, at least Schiano will get to face off with another disappointing from-college to NFL coach, Chip Kelly, in Week 6.

Washington Redskins (1-3) It's the NFC East, so despite a bad start, the Redskins are a game out of first place. With Dallas, Chicago, Denver and San Diego, the Redskins are facing a make-or-break stretch in their next four games.